MASSIVE AND MARTENSITE TRANSFORMATIONS IN Sn-Cd ALLOYS.

J. Koike, Yasumasa Koyama, O. Nittono

Research output: Contribution to journalArticle

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Abstract

The morphological change of substructures and the shape memory effect associated with the simple hexagonal B ARR LR beta -Sn structural transformation in Sn-(4. 2-5. 3) at% Cd alloys have been investigated. The alloys were quenched from a temperature at which the simple hexagonal structure was stable to various temperatures. Their substructures were observed by means of an optical microscope and their crystal structures were identified by means of an X-ray diffractometer. The massive transformation as well as the martensite one takes place as a diffusionless transformation. The massive transformation temperature (Ma) is independent of the solute content, while the martensite transformation temperature (Ms) decreases with increasing solute content. A shape memory effect was observed in Sn-Cd alloys and was remarkable for the specimen quenched below 160 K. The shape-recovery amount of the specimen, which is quenched below the Ms temperature and reveals a massive substructure, is considerably small.

Original languageEnglish
Pages (from-to)254-259
Number of pages6
JournalTransactions of the Japan Institute of Metals
Volume27
Issue number4
Publication statusPublished - 1986 Apr
Externally publishedYes

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martensite
Martensite
substructures
Shape memory effect
solutes
Temperature
temperature
Diffractometers
optical microscopes
diffractometers
Microscopes
Crystal structure
recovery
Recovery
X rays
crystal structure
x rays

ASJC Scopus subject areas

  • Engineering(all)

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MASSIVE AND MARTENSITE TRANSFORMATIONS IN Sn-Cd ALLOYS. / Koike, J.; Koyama, Yasumasa; Nittono, O.

In: Transactions of the Japan Institute of Metals, Vol. 27, No. 4, 04.1986, p. 254-259.

Research output: Contribution to journalArticle

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